Why is it Derek in Grey's Anatmy is called McDreamy and Mark is called McSteamy??

Question

Why is it Derek in Grey's Anatmy is called McDreamy and Mark is called McSteamy??

Answer 1

His charismatic, charming personality and good looks earned him the nickname “McDreamy” among Meredith and her friends.

Meredith was the one who came up with the name "McSteamy". From that moment on, the interns regularly used the nickname behind Sloan's back. He eventually found out about the nickname when Meredith, who was under the influence of painkillers, called to him "McSteamy! Woo hoo!" to which he replied, "Is that what you're calling me now? McSteamy?" She responded by saying, "Yeah, but I don't think you're supposed to know that."  

Answer 2

derek is the guy you take home to mother , Mark is the guy you just take home  

Answer 3

It's just a name the interns came up with.

Answer 4

have you seen their bodies. gorgeous don't you think

Answer 5

I think Mcsteamy is always in the shower..& McDreamy is because Meredith is always dreaming of him..

Answer 6

Mark b/c of the shower scene

Derek b/c he's good looking